系统是mac 之前用终端安装pygame的时候报错，后面关掉重装的时候，出现代码如下：
~ brew install hg sdl sdl_image sdl_ttf
Warning: mercurial 5.4.2 is already installed and up-to-date
To reinstall 5.4.2, run `brew reinstall mercurial`
Warning: sdl 1.2.15_1 is already installed and up-to-date
To reinstall 1.2.15_1, run `brew reinstall sdl`
Warning: sdl_image 1.2.12_7 is already installed and up-to-date
To reinstall 1.2.12_7, run `brew reinstall sdl_image`
Warning: sdl_ttf 2.0.11_1 is already installed and up-to-date
To reinstall 2.0.11_1, run `brew reinstall sdl_ttf`
使用pip list 查询的时候，并没有发现有pygame； 请问如何解决？
